# coding: utf-8
import numpy as np

import matplotlib.pyplot as plt



x= np.linspace(0, 10, 1000)
y= np.sin(x)

z=np.cos(x**2)



plt.figure(figsize=(8, 4))
plt.plot(x, y, label="$sin(x)$",color="red",linewidth=2)

plt.plot(x, z, "b--",label="$cos(x^2)$")

plt.xlabel("Time(s)")

plt.ylabel("Volt")

plt.title("PyPlot First Example")

plt.ylim(-1.2,1.2)
plt.legend()

plt.show()